With math algebra question in the picture

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3